CVSS ordering validation
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
- Issue type
- Bug
- Clarity
- Needs clarification
- Activity status
- Quiet
- Domain
- security
Research direction
Review the cited GHSA-mc24-7m59-4q5p advisory and compare its CVSS vector ordering and score with the stated CVSS 3.1 expectations. Clarify the validation scope for existing and newly created advisories; done means compliant vectors are detected and the displayed score uses the intended base-score calculation.
Written by the indexing model from the issue text.
Description
Hello there,
It seems that there are several instances (have now been corrected) where CVSS vector string does not follow the compliant ordering. While base score is looking correct, this might be a compliant mismatch downstream.
Another thing is that it seems GHSA calculates Environmental Score instead of base score. For example, https://github.com/rancher/rancher/security/advisories/GHSA-mc24-7m59-4q5p. This GHSA has the vector string as CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H which should be resolved into 8.3 CVSS instead of considering Environmental Score 8.4
I am wondering if Github Sec team has putting some considerations to validate the vector string for all existing and upcoming GHSA being created?
Thank you for your work and your time!
Chi Tran
Amazon Inspector
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